Lactate clearance for death prediction in severe sepsis or septic shock patients during the first 24 hours in Intensive Care Unit: an observational study

Annals of Intensive Care

Table 1 Demographic characteristics

	Overall population (N = 94)	Survivors (N = 52)	Nonsurvivors (N = 42)
Gender
M/F (%)	56 / 44	59 / 41	54 / 46
Age (yr) (mean ± SD)	58 ± 16	55 ± 17	61 ± 15
SAPS 2 (mean ± SD)	60 ± 17	53 ± 16	69 ± 15^*
Sepsis origin, N (%)
Pulmonary	27 (29)	14 (27)	13 (31)
Digestive	26 (28)	18 (35)	8 (19)
Urinary	4 (4)	2 (4)	2 (5)
Other	37 (39)	18 (35)	19 (45)
Hemodynamic status on ICU admission (mean ± SD)
Mean arterial pressure (mmHg)	66.5 ± 10.3	68 ± 11	64 ± 10
Cardiac index (L/min.m²)	3.4 ± 1	3.4 ± 0.9	3.4 ± 1.3
Norepinephrine (μg/kg/min)	0.62 ± 0.37	0.44 ± 0.34	0.77 ± 0.5^*
Scv0₂ (%)	73.3 ± 9.4	74.1 ± 9.2	72.3 ± 9.6

ICU intensive care unit; SAPS 2 Simplified Acute Physiology Score; ScvO₂ central venous oxygen saturation.
*p < 0.05 vs. survivors.